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(No Model.) J. A, BAILEY, Decd.

J. C. BAILEY, Administratflx.

MACHINERY FOR SAWING'STONE.

N0. 893,201. Patented Nov. 20, 1888.

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UNITE STATES PATE T FFICE.

JOHN A. BAILEY, OF MARQUETTE, MICHIGAN, (JANE O. BAILEY ADMINIS- TRATRIX OF JOHN A. BAILEY, DECEASED,) ASSIGNOR OF ONEHALF T JOHN H. JACOBS, OFSAME PLACE.

MACHINERY FOR SAWING STONE.

SPECIPICATIO N forming part of Letters Patent No. 393,201, dated November 20, 1888. Application filed March 29, 1887. Renewed October 20, 1888. Serial No. 288,685. (No model.)

To all whom it may concern.-

Be it known that I, JOHN A. BAILEY, a citizen of the United States,residing at Marquette, in the county of Marquette and State of Mich- 5 igan, have invented certain new and useful Improvements in Machinery for Sawing Stone; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in' the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

1 Figure 1 represents a top view of the device, and shows also the plan of the saw frame or carriage E, below the upper mechanlSln of the machine; Fig. 2, a side view; Fig. 3, an end view; Fig. at, an enlarged side View of the saw H.

This invention relates to improvements in stone-sawing machines, and has for its object the production of a machine wherein the working parts are kept level during thelength 2 5 of the stroke of the saws, and wherein water and sand are admitted to the kerf and under the saws without the usual mechanical devices for .jumping or lifting of the saws at each half-stroke to admit such water and sand.

To this end the invention consists in a machine and saws of the peculiar construction,

hereinafter set forth.

In the annexed drawings, the letter A indicates any ordinary frame-work for the saw- 5 mg mechanism.

At the middle of the top of the upper longitudinal-beams of the frame Aare secured the blocks B B, each having the two bearings b b. In these hearings are placed the journals c c, Fig. 2, of two triangulariron frames, 0 C. The apices c c of these frames are near the ends of the machine-frame A. To these apices c c are journaled the apices dd of two other triangular frames, D D, consisting of 5 legs (1 d. The lower ends or angles, (1* d of these frames are j ournaled at m m to the ends of the side beams of the saw-frame E E. This is an ordinary saw frame or carriage placed in the usual way in the frame A, and is elevated and lowered by the ropes F F, having the usual gearing, as shown.

In the carriage E are placed the saws H. These saws have in their cutting or 'abrading edges h the notches or slots h, arranged at irregular intervals, as shown, those toward eachend having less and less intervals between them to allow the wear of sawsat the ends to equal the wear in the middle.

In practice a car, G, with a stone, K, is run into the frame A, as in Figs. 2 and 3, and the saw-carriage is lowered for work. Sand and water are supplied in the usual way, and the saws, operated by any suitable device, are allowed to rest with the full weight of saws and frame at all times and at full stroke without lifting or jumping. The triangular frames 0 O and D D, moving in their severaljournals, allow the saws to move and at the same time hold the carriage in a level position and always keep the saws horizontal and make straight perpendicular kerf. The slot h in the saws allows the abrading sand and water to pass freely into the kerf and under the saws without the usual jumping to admit them, fresh sand being admitted under the saws through each slot h when the saws are in motion and giving far greater results in work than has heretofore been obtained.

I am aware that it is old to have a sawingmachine frame provided with arms hinged to 'each other, to the frame, and to the saw. I

make no broad claim thereto; also, that a saw for cutting stone has been made with grooves in its sides or faces, such grooves running into angular notches in the edge of the saw. These notches run way up into the body of the saw and are made so that sand and water passing down the grooves may have spaces below to enter, and these notches with the grooves allow the sand and water room to move up and down as the saw is worked.

I construct my saw with a number of shallow rectangular slots or notches, h, as already described. These notches are small and divide the edge of the saw into teeth, as itwere, so that in operation the sand is caught into these notches and cuts with greater efficiency, and also keeps the saw from jumping.

ro angular frames D D, hinged at their bases to the saw-carriage, and the frames 0 D and frames G D, hinged together at their apices, in combination with the saw-carriage and machine-frame, as setforth.

In tcstimonywhereof I affix my signature in [5 presence of two Witnesses.

JOHN A. BAILEY.

\Vitnesses:

RICHARD BLAKE, GEO. P. CUMMINGS. 

